Pipe



March s, 1935,.l s. SZYMCZAK, 1,993,122

PIPE Filed April ll, 1.934

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Patented Mar. i935 UNITED STATES PATENT OFFICE 1 f I `1,993,122 I n t l l Y PIPE n Stanley Szymczak, Milwaukee, Wis.A y Application April 11, 1934, 'SerialNm `719,984 n 3 Claims.

This invention appertains to pipes, conduits, or similar fluid conductors formed from concrete or other plastic material and generally employed in underground sewers, watermains, culverts, and the like. l I

Inpipes, or sewers, of this character, it is cus` tomary to build forms in the tunnel, j ditch, or other excavation, and pour the concrete around the forms. Obviously, this is a laborious and expensive operation.

I am aware that it has heretofore been proposed to make the pipes, sewers, etc., from precast units. In all of these'units with which I am v familiar, extreme difficulty is had in assembling the units, and the units cannot be associated together as the tunnel is being built.

It is, therefore, one of the primary objects of my invention to provide a pipe, or culvert, built up of pre-cast sectional units, which can be read` ily assembled, and which are of such a form that all sections can be brought through the built part of the pipe, or culvert, and assembled as the tunnel is being built.

Another object of my invention is to provide a pipe, orv culvert, built up of pre-cast sectional units of such a construction as to" permit the same to be assembled by unskilled workmen, thereby dispensing with the necessity of employing skilled artisans.

a concrete or similar plastic pipe, or culvert, constructed from pre-cast sectional units with each of the units embodying three sections including an integral base section and like companion top side sections, the sections having novel interlocking means for facilitating the connection thereof, all of the sections forming a complete unit, being provided with tongues and grooves on their opposite ends for interlocking relation with the adjacent sections to form a continuous pipe, or culvert.

A still further object of my invention is to provide a novel sewer, or culvert, of the above character, which will be durable and elilcient in use, one that will be simple and easy to manufacture, and one which can be placed upon the market at a reasonable cost.

With these and other objects in view, the invention consists in the novel construction, arrangement and formation of parts, as will be hereinafter more specifically described, claimed, and illustrated in the accompanying drawing, in which drawing:-

Figure 1 is a transverse section through a tunnel, or sewer, showing my improved pipe, or culvert, built'therein, the pipe, or culvert-being shown in end elevation with parts thereof broken away and in sectionto illustrate structural def tails.

Figure 2 is a horizontal sectionv through 'the 5` Referring to the drawing in detail wherein similar reference characters designateA corre-r sponding parts through the several views, the let'A ter A1 generally indicates my improved pipe, or 20v' culvert, and B, a tunnel, or sewer,jin which the conduit'is placed.. A j j My improved pipe, conduit,or culvert, com,- prses a plurality of like, ,companion units 5, and each one of the units 5 includes independent sec- 25 tions 6, 7, and 8. The sections 6,` 7, and'8 can be formed of concrete or othervplastic or ceramic material, and the sections aremoldedandhardened before the same lare assembled to form the units5. ,Y .Y

The section 6 constitutes the base portion of a unit, and consequently the same isprovidedjwith side, laterally extending aprons'9 which form an enlarged base for engaging the floor of the tunnel, ditch, or other excavation. This base sec- 35y tion 6 is formed slightly less than a half of a circle, as can be seen by referring to Figure 1 of the drawing. The upper ends of the base section 6 are formed with at faces, or seats, 10, having projecting upwardly therefrom connect- 40 ing lugs 11.

'Ihe sections 7 and 8 are of like construction, and each is slightly greater than a quarter of a circle, so that when the sections 6, 7, and 8 are assembled the same will form substantially an 45 annular unit in end elevation.

The lower ends of the sections 7 and 8 are provided With flat seats 12 for engaging the flat seats, or faces, 10 of the base section 6, and these seats 12 are provided with sockets 13 for receiv- 50 ing the lugs 11.

To facilitate the interlocking of the sections 7 and 8 together, the'upper meeting ends thereof are provided respectively with a socket 14 and a lug 15.

the building Of -the"ppe, r01' 15- When these sections are assembled, a suitable cement', or the like, is placed between their meeting joints so that a substantially integral unit structure will be had.

All of the sections at one side thereof are provided with a forwardly extending tongue, or flange, 16. This tongue, or flange, 16 is of less diameter than the exterior diameter of the unit, and the outer face of the tongue, or flange, 16 is provided with an outstanding beveled rib 17.

It is to noted thatv the forward faces of the sections forming the unit and the' forward faces of the tongues, or anges, 16 are inclined forwardly and toward the center of the unit.

The opposite faces of the sections forming the unit are provided with grooves 18p into which the ribs 17 of the flanges, or tongues, 16 are adapted to fit. It is to be noted that the portion of the sections which carry the grooves 18 have their interior diameter enlarged for the reception of the tongues, or flanges, 16. Likewise, the faces 19Vof thesesections on 'opposite sides of the grooves are inclined inwardly to' form intimate contact with the inclined faces f the forward ends of the sections.

When the sections are assembled, a suitable cement, oiilikefmaterial, is utilized for forming a bond between the `sections.A

`With my improved pipe, or culvert, the sections can be readily and quickly assembled to form a completepipe without the use of skilled workmen, andthe sections can bev formed ata point remote from the tunnel or 'other excavation, if desired,

In Figure '4, I have illustrated one means of assembling the sections, and in thisparticular form as the tunnel is being dug a predetermined number of base sections 6 are placed on the floor of the tunnel and assembled, after which the two top side sections 7 and 8 of the first. unit are placed on 'the "upper ends of the rst base section and then'swungv together so asV to allow the interiitting of the lug 15 inl its socket 14. Theother sections are nowpassedthrough the assembledunit and placed in position.

,"As the tunnel' is beingy dbris can be wheeled away through the assembledunitsf A l Due tofthe shape andsize of the sections of the units, these sections can be readily passed.

through assembled units.

y From vthe vforegoing description,I it can be seen that I have provided kan exceptionally simple and durable formV ofpipe, or culvert, which can be du'athe dirt and orner cast exteriorly of the tunnel, or other excavation.

Changes in details may be made without departing from the spirit or the scope of my invention, but what I claim as new is:--

1. A pipe, or culvert, comprising a plurality of like companion units, each of said units including a base section and like companion top side sections, mating interlocking means carried by the meeting ends of the base section and top side sections, mating interlocking means carried by the meeting ends of the top side sections, one end of the sections being provided with interior grooves extending in a transverse direction, and ribs formed on the other ends of the sections for reception in the mentioned grooves of the sections of adjacent units.

2. A pipe, or culvert, comprising a plurality of interlocking like units, each of said units including a pre-cast base section and pre-cast like top side sections, lugs formed on the upper ends of the base sections, socketsrformed on the lower ends of the top side sections for receiving the lugs, and a lug formed on the upper end of one top side section, the vupper end of the otherV topside section having a socket for receivingl the last mentioned lug, all of the sections at one end being provided with a forwardly projecting flange having an'outstanding rib thereon, and all of the sections at the other end being provided with an interior reduced portion having a groove, extending in a transverse direction, as for the purpose specied.

3. A pipe, or conduit, comprising a plurality of like companion units, each of said units including a base section having an arc slightly less than a semi-circle, the upper ends of the base section being provided with flat faces, and lugs formed on said fiat faces, like companion top side sections, each being formed on a slightly greater arc than a quarter of `a circle and' having their lower ends provided with flat faces and sockets for receiving the lugs on'the kbase section, the upper ends of .the top side sections Vbeing provided with flat faces having interlocking means thereon, al1 of said sections when assembled forming a substantially annular unit, each of the units being pro-..

vided at one end with an annular flange and an outstanding rib, and all of the units at their opposite ends having theiry interior faces enlarged and provided with annular grooves, extending in a transverse direction as for4 the purpose specified.

' STANLEY SZYMCZAK. 

